Fill in the blanks.
The ratio of children to adults is 3 : 2.
The ratio of men to women is 2 : 5.
Use LCM and find the following.
- Number of children = _____ u
- Number of men = _____ u
- Difference in the number of women and men = _____ u
- Total number of people = _____ u
Children |
Adults |
3x7 = 21 u |
2x7 = 14 u |
|
Men |
Women |
7 |
2x2 |
5x2 |
21 u |
4 u |
10 u |
(a)
Change ratio into units.
Men : Women : Children
2 : 5 : 2 + 5
2 : 5 : 7
The number of adults is the repeated identity.
LCM of 2 and 7 is 14.
Number of children = 21 u
(b)
Number of men = 4 u
(c)
Difference in the number of women and men
= 10 u - 4 u
= 6 u
(d)
Total number of people
= 21 u + 14 u
= 35 u
Answer(s): (a) 21; (b) 4; (c) 6; (d) 35